RAS2XBM
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RAS2XBM
Section: User Commands (1)
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NAME
ras2xbm - convert gpsras bitmap images to XBM format
SYNOPSIS
ras2xbm
[-rot deg]
[-inv n]
rasfile
DESCRIPTION
Ras2xbm
converts the
gpsras
format bitmap image in the given
rasfile
(as produced by
sdump
or
hpgl2ras)
into an XBM format bitmap image.
The XBM image is sent to the standard output.
If no
rasfile
argument is given, the standard input is read.
The gpsras image must be a 1 bit/pixel bitmap.
No output is generated if the input cannot be read,
or is of the wrong format.
The XBM format is
usable by other X Window applications,
and can easily be converted to a number of common image file
formats using an application such as the
xv
image viewer,
or
xbmtopbm(1)
and other utilities in the
netpbm
package.
If the
-rot
option is given, the image is rotated by the specified number of
degrees, rounded to the closest 90 degree increment.
If the
-inv
option is given with an
n
of
0,
then
ras2xbm
will invert the bits of the image.
This is reverse of what you'd expect, but that's because the bits
of an XBM image are normally the reverse of what they are in a
gpsras
image.
The gpsras format treats 1 as white, while the XBM format treats
0 as white.
So, "-inv 0" suppresses reverse video.
The order of bits in each byte is always reversed, as gpsras
format uses the most significant bit first, while XBM uses the
least significant bit first.
SEE ALSO
sdump(1), emuhpgl(1), gpsras(5),
xbmtopbm(1)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
This document was created by
man2html,
using the manual pages.
Time: 17:58:06 GMT, February 20, 2019
Copyright © G. R. Detillieux,
Spinal Cord Research Centre,
The University of Manitoba.